Home / 13,119.45-18,103.26-7,452.15

Finding the Fourth Proportional to 13,119.45, 18,103.26 and 7,452.15

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Solution

The fourth proportional to 13,119.45, 18,103.26 and 7,452.15 is: 10,283.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.45 : 18,103.26 = 7,452.15 : x
  2. Step 2: Convert to fraction form
    13,119.45/18,103.26 = 7,452.15/x
  3. Step 3: Cross multiply
    13,119.45x = 18,103.26 × 7,452.15
  4. Step 4: Simplify right side
    13,119.45x = 134,908,209.01
  5. Step 5: Solve for x
    x = 134,908,209.01/13,119.45
  6. Step 6: Final answer
    x = 10,283.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.